1538454485 has 8 divisors (see below), whose sum is σ = 1849029336. Its totient is φ = 1228840960.

The previous prime is 1538454481. The next prime is 1538454499. The reversal of 1538454485 is 5844548351.

It can be written as a sum of positive squares in 4 ways, for example, as 103408561 + 1435045924 = 10169^2 + 37882^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1538454485 - 2² = 1538454481 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1538454481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236804 + ... + 243213.

It is an arithmetic number, because the mean of its divisors is an integer number (231128667).

Almost surely, 2^1538454485 is an apocalyptic number.

It is an amenable number.

1538454485 is a deficient number, since it is larger than the sum of its proper divisors (310574851).

1538454485 is an equidigital number, since it uses as much as digits as its factorization.

1538454485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480663.

The product of its digits is 1536000, while the sum is 47.

The square root of 1538454485 is about 39223.1371131887. The cubic root of 1538454485 is about 1154.4139090259.

The spelling of 1538454485 in words is "one billion, five hundred thirty-eight million, four hundred fifty-four thousand, four hundred eighty-five".